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Fig. 2.

Fig. 2. Refer to the following caption and surrounding text.

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Luminosity light curves in the 100 MeV – 100 GeV energy range over 16 yrs for each SN of our sample from the Fermi launch to August 2024 with a time bin of 6 months. A flux point is shown when the TS > 4, otherwise upper limits at the 95% confidence level are reported. In all time bins, the spectral index of the tested source is fixed to 2. The SN discovery date is also indicated. For a comparison across the sample, the derived Fermi-LAT flux is transformed to luminosity using the distance indicated in Table 1.

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